SPL review:Joe Ledley headed the only goal of the game as Celtic claimed a 1-0 victory over Old Firm rivals Rangers at Parkhead to go top of the Clydesdale Bank Scottish Premier League.
A second-half header from the Welshman proved to be the difference in the second Old Firm derby of the season, although Rangers may argue an early header from Lee Wallace also crossed the line when the match was deadlocked.
The Scottish champions were 15 points clear of Celtic in early November but now find themselves heading into 2012 trailing by two points in the title race.
Pat Fenlon claimed his first point as Hibernianmanager but was denied victory as Invernesscame from behind for a 1-1 draw at Easter Road.
Garry O'Connor netted an eighth-minute free-kick for his first goal since September 28 - when Hibs beat St Johnstone for their only home win since February - but Jonny Hayes easily cut through the Hibs defence and levelled after 41 minutes.
The result saw 10th-placed Inverness retain a four-point lead over Hibs, who moved a point clear of bottom club Dunfermline.
Francisco Sandaza's double moved St Johnstone to within two points of third-placed Motherwellas they beat Kilmarnock2-0.
The in-form Spaniard took his tally for the season to 12 in 16 starts with two first-half strikes at McDiarmid Park.
With Motherwell inactive after their match against Dunfermline was called off due to wind damage at Fir Park, St Johnstoneclosed the gap with a clinical win.
New Zealand international Rory Fallon passed up the best opportunity of a goalless encounter between Aberdeenand Heartsat a very blustery Pittodrie.
The Dons striker should have headed home Scott Vernon's cross after 15 minutes but somehow put the ball wide from close range.
Ryan Jack also went close for the hosts with his shot well saved by Marian Kello but the fierce winds were far from conducive to good football and goalmouth action was at a premium as a consequence.
Graham Carey's stunning long-range strike was the pick of four first-half goals as St Mirrenand Dundee Uniteddrew their clash 2-2 in Paisley.
The St Mirren winger netted an unstoppable 25-yard effort to give his side a 2-1 lead after Steven Thompson and Jon Daly had exchanged strikes.
However, his effort was quickly cancelled out by Stuart Armstrong in an extraordinary spell which saw all of the goals arrive within 10 minutes, and 2-2 proved to be the final score following a goalless second half.
Earlier in the day, strong winds have forced the postponement of Motherwell's match against Dunfermline
